Bed-spring



Patented Aug. 23, 1921.

J. L. ISAACS.

' ED ING- ION r JULY 23, I920.

APPLI PATENT OFFICE.

JOEL L. ISAACS, OE MILWAUKEE, WISCONSIN.

BED-SPRING.

Application filed July 23, 1920. Serial No. 398,519.

' T all whom it may concern Be it known that LJOEL L. ISAACS, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Bed- Springs, of which the following is a specification.

One style of bed-spring on the market comprises a plurality of longitudinal, parallel, spaced, relatively-narrow, flat, metal strips or bands connected to the ends .of the frame by helical springs and desirably cross connected together by similar shorter springs. Such a construction, while convenient and advantageous from many aspects, nevertheless has a distinct disadvantage in that it leaves a large number of gaps or spaces between the strips into which portions of the superposed mattress sag, and when it is desired to turn the mattress over or reverse it end for end, as is frequently necessary, difficulty is encountered in freeing the mattress from such strips of the fabric with which it has become more or less interlocked by reason of such depressed or the present invention is the production or provision of an improved form of bedspring of the general type specified, which will facilitate the turning over or reversal of the mattress and in which the metal strips or slats are somewhat stiffened for strengthening purposes.

In order that those skilled in this art may have a full understanding of this invention and its various advantages and may comprehend the manner in which the above-specified and other desirable objects are attained, I have illustrated in the accompanying drawing forming a part of this specification several desirable embodiments of the invention.

In this drawing- Figure 1 is a perspective view of the en-' tire bed-spring;

' F 1g.22 is an enlarged cross-section through a few of the metal strips;

Fig. 3 is a similar view of a modified conspecification of Letters Patent. Patented Aug. 23, 1921.

composed of end-bars '10, 10 and side railsor bars 11, 11, the end-bars supporting a relatlvely larg number of spaced, parallel, metal bands or strips 12, 12 by means of helical-springs 13, 13 fastened to the endbars in the usual way and also secured to the ends of such strips, the latter. being also connected together yieldingly crosswise or transversely of the appliance by other short coil-springs 14c, 14:, so that the top or fabric of'the bed-spring as a whole possesses adequate resilient or cushioning characteristics to perform th functions for which the appliance is intended. As is shown more clearly in Fig. 2, the metal strips 15 at the edges of the spring are appropriately wider than the intermediate companion members 12 to strengthen such portions of the structure which are subjected to greater strains, and as is customary such border strips are secured to'the end-bars of the frame by a pair of helical springs 13 instead of a single spring.

In order to prevent the superposed mattress from becoming objectionably and detrimentally interlocked with such metallic fabric as indicated above, the metal strips or bands are bent or arched or bowed slightly transversely to relieve or eliminate the sharp bends at those portions of the mattress which sag or project downwardly into the spaces between and around the edges of such metallic bands. The entire width of each metal band or strip 12 and 15 may be laterally arched or curved as shown in Fig. 2 or its middle portion only may be curved crosswise as shown in strips 16 in Fig. 3, and in each instanc the sharp bend or deflection of the mattress around the edges of the metal bands is avoided so that the mattress may without difliculty be pulled cross wise the structure while resting thereon thus facilitating the overturning operation. By

thus shaping these bands or strips such desirable result is not only accomplished but the bands are also somewhat strengthened or stiffened by reason of this new conformation.

As illustrated in Fig; 4:, the main body of these bands 17 may be flat with their edges curved or bent downwardly providing flanges, as shown, which give to such bands or strips the specified desirable characteristics with respect to th easy sliding of the mattress crosswis thereover'and the stiffening or strengthening of such bands.

Although in this application I have set forth in detail only a few embodiments of the invention, it is to be understood that the latter is not limited and restricted to the precise and exact details of structureshown and described because these may be modified within comparatively wide limits without departure from the heart and essence of the invention and without the sacrifice of any of its substantial benefits and advantages.

Although this invention has been illustrated and described in connection with the bed-springs, it is obvious that an invention of this character may be satisfactorily employed in other but somewhat different fieldsJ. 6., c 1shions, chair seats, couches, etc.

said bands attheir ends to said frame, means connecting said bands together trans versely between their ends, th top faces of said bands andth'e tops of said intermediate connecting means being in substantially the same horizontal. plane, the curved shape and the location of the top surfaces of said bands facilitating the transverse sliding of the superposed mattress thereon, substantially as described.

JOEL L. ISAAGS. 

